With the REV2 it takes very little effort to actualize whatever interesting idea you have in your head and do it without even touching the effects section. Whereas with a more basic synth it takes a lot more finessing (and often effects) to get anything quite as interesting. Of course you can get very beautiful sounds out of it as well. The only real downside sound-wise is that it can be lacking or even a tad grating with thinner tones, which can be easily amended by fattening things up with all the options available.